Pipe wrapping machine



Filed Jan. 12. 1931 2 Sheets-Sheet l H/.S ATTORNEY Aug. 1, 1933. D. FlNLl-:Y

PIPE WRAPPING MACHINE Filed Jan. 12, 1931 2 Sheets-Sheet 2 Patented Aug. 1, 1933 f My invention relates lbroadly yto a machine `for imparting to a cylindrically-shaped object t la combiner rotary and longitudinal'motion, and

particularly to afpipe wrapping machine and 4to the vPipe moving mechanism thereof. v It vis one of the objects ot my invention to provide movement of the character described, irl-'which a belt drive is employed. l v Y.

Another object-of the Vinvention is the provision of a belt drive in which means ris provided-for elicaciously holdingfthe belt iirmly against the pipeto prevent wobblingand provide rm tractional engagement With the pipe. A further yobject of my invention is the provision of a belt drivefrnachine, of the character described, in whichtractional engagement with the pipe is provided forby aplurality of belts firmly contacting withv the pipe. Further objects of my invention includev the provision of guide Ineans for holding the belts abouta substantial'portion of the pipe surface;

of means for adjustably positioning the guide means'andlbelts to accommodate pipes of different sizes ,j and of meansfor varying the angularsetting or" the belts relative to the pipe axis to alter the pipe movement;

The invention possesses numerous other obf jects and features o fY advantage, some of which, with the foregoing, will be setter-th in the fol'- lowing description of kmy' invention. It is' to be understood that I do notv limit myself to kthis disclosure of species 'or my invention, as I may adopt variant 'embodimentsthereofj within the scope of theclaims. l

Referring to the drawings: o ligure'-` 1'- is a transverse vertical sectional vewmof the pipe wrapping machine, embodying my inventiom" the upper portion of the pipe movingI mechanism being vs lfriovvn in vertical Vsection and the lower portionin'end elevation. Figure 2 is a horizontal Asectional view oi the machine taken ina plane indicated by the line 2 2 of Figure 1.

" In-ter'ms'of broad inclusion the pipe Wrapping gmachne embodying my' invention comprises ar belt adapted to tractionally engage the pipe,`

and set at a selected angle'to the pipe axis. Guide means are provided for. holding the belt about a substantial portion ofthe pipe surface, 5 and means are provided for driving the belt to give the l'pipe acombined rotary and longitudinalmotoo- .Means are provided ,for ,adv `justablypositioning the guide means and belt tofaccom'modate pipes of different sizes, and

means are vprovided for varying thev angular setting of the belt relative tothe pipe axis to alter the' pipe movement. A pair of belts are preterably provided andr are arranged in an' oppor sitely disposed and crossed positionabout the fln greaterdetafil the pip'efwrapping mahlne embodying my invention comprises a. trarne 2 `mounted'on asuitable Afoundation 3.` A pair of orpositely and vertically disposed supporting `heads i are slidably mountedon the trame 2. -The position Lof these heads in adjusted bya pair of`.vertically disposed elevator screws 6 journaled in the basev oi the frame 2 fandfthreaded thru the ends of thesupporting heads. The Y screw portions passing thru one of the heads have left hand threads, 'while the portions pass.,- ingthru the oth "have right hand threads, so that when'the are rotated in one direction the headsare moved towards eachother, -V

and when rotated in the opposite directionj'tl're heads are moved 'away from each other..

Means are provided `for rotatingthe elevator screws 6to adjustably position the supporting heads Il., A"worm gear 7' is secured tothe'lov/er ond of eachlscrew, and a thrust bearing .3 :is Vinterposed betweethe gear and the frame' 2; a shaft fixed collar Qbeing'provided Afor holdirig thek screw in its 'journaled position. A cross shaft 1,1 is' journaledin theframe iiXed bearings 12 adJv'aoenty therelevatoor screws 6, and is provided with the worms 13 meshed with -the worin gears 7 of the screws." AV hand wheel lfllp'rovides rme'ans for rotatingthe vshaft 1l, and eensequently the elevator screws 6, to move the supportingvheads. f f.

A pair of oppositely disposed rotors 16 are mounted on the supporting heads gione vrotor being mounted on each head. The rotors' are journaled inthe'heads by 4means ,ofthe rollers 17 running in the` arcuate guide grooves 13 `of the heads. 'A belt `19 is mounted on each rotor,

and runs overa pairof pulleys `2l vjournaledin the rotor xed bearings122. These belts are positioned "to tractionally 4engage .a `pipe guide means are provided for holding the belt 4about a'substantial portion of the pipe surfae.

The guide meansl preferably comprises a twin pair of rollers 24 arranged below andabove the upper and lower portionslrespectively of therp'ipe i surface; one pair of the rollers being mounted on each of the heads 4. As a belt reachpasses orf one of the pulleys 21`it runs over one of the vguide rollers, passes over a substantial portion of the pipe Sula, .runs over the other guide roller," and finally passes 'on the other. pulley.

pulleys 21 these pulleys are provided with the flanges 26. The guide rollers are parallel with the pipe axis, and extend across theA rotor guide grooves 18 so that the rollers actfto guide the belts in any position of the rotors.

-Means are provided for moving the guide roll ers in each pair to and away from each otherv for accommodating pipes of different sizes. The rollers 24 are freely journaled in the brackets 27 which are slidablymounted on thehorizontal guideways 28 of the supporting heads 4. Suitable spreader screws 29 are .journaledfinV the head iixed brackets 31,.'and are threaded. thru the roller brackets'27; a screw being provided adjacent each of the ends of each pair lof rollers.Y

v*of the screws of Veach pair is provided with a bevelggear 33. Avertical shaft 34 is mounted acacent 'the' gears 33 and is Supported by the bracket arms 36 of the heads 4. One 'end of the shaft carries a bevel gear 37 meshed with` one of the spreader screw gears 33, and theother end is slidable thru a bevel gear 38 whichis meshed fwith theL gear 33. of theother spreader screw. A'handdwheel 39 is mounted on one of the spreader screws,"andas is apparent. from the above arrangement, 'when -the .hand `wheel is turned'all theguide rollersfiwill be moved simult'aneously and in parallelism. Due to the rslidable gear 38the heads 4 are allowedy to move when the' elevator screws 6 Vare rotated.

Means areprovided for .tensioning the belts toV insurel the"traetion'al engagement thereof with Ithe pipe.` To thisend the rectangular blocks Y41 are'slidably mounted in suitable recess 42 provided inthe rotors p16.' .The rods 43 project vertically from the' blocks, and are journaled Y' the bearings 44 .of the, heads 4. Suitable 'springs 46 urge the 'blocks 41 toward the open ends of their confining recesses, and the ycollars 47 on the ends ofthe projecting rods 43 serve to limit the block movement. The'blocks 41 carry suitable vidler pulleys 48 adapted to runl on the "free reaches of, the belts. It is to be noted that Vthere is considerable slack in fthe belts; this being provided for the larger sized pipes.

Means are provided for turning the frotors to vary-the angular setting thereof relative vto the pipe axis. The Worm gears 49 are splined kon the journaled rods 43, and are meshed with y the worms 51 fixed on the cross`shafts52.

yThese shafts are connected together by a vertical Vshaft 53, Ajournaled in the head fixed bearing vbrackets 54, thruthe bevel gears 56. In order to allow relative movement of the supporting heads 4, one yof the gears 56 is slidable on the vertical connecting shaft 53.

` A handv wheel` 57 mountedv on one of' the crossgshafts'52 provides means for turning the rods 4?, and consequently the rotors 16, to vary the angular settings of the belts relative to 4the pipe axis.` yThelnechanism is A adjusted so ,that the' belts, in one position thereof, are vparallel andA at right angles to the pipe axis.

When the rotors are turned the belts are si- .vertical' connecting kshaft 70.

In order to keep the belts from running off they multaneously moved, one in one direction and theY other in the opposite directiomso that in any position thereof the crossed belts are set the same angle relative to the pipe axis.

Means are provided for driving the belts. The sleeves 57 are disposed about the rods 43, and are journaled in the bearings 58 yof the heads 4. The ends ofthe sleeves, adjacent the rotors 16, are provided with the bevel gears 59 meshing with the pinion gears 61. These pinions are connected with the sprockets 62, and together are journaled'on suitable stub shafts 63'mounted on rotors 16. The chains 64 running over the sprockets 62 and suitable sprockets 66 mounted on the pulley shafts serve to drive the belts when the sleeves are rotated.

Rotation of the sleeves 57 is effected by the lcross shafts 67 which carry the worms 68 meshed with the sleeve connected worm gears 69. The shafts 67 are connected by a vertical jshaft 70, journaled in thefhead iixed bearing brackets 71, thru the bevel gears 72. yIn order to allow relativev movement of the supporting heads 4, one of the gears ,72 is slidable on the u The lower end of the shaft 70'is connected to a drive pulley 73 thru .the gears 74; thel pulley 73 being driven by a suitable belt 76. By this arrangement the belts are driven-simultaneously, and at the same rate in opposite directions.

Any suitable means may be provided for applying a wrapping material to the pipe. For purposes of illustration a uid tank 77 is shown pivotally mounted on the frame 2 below the pipe 23. A supply roll 78 of strip material 79 is mountedA on the tank, and the strip is threaded over suitable rolls 81 to submerge the stripin the tank fluid.l The strip is then directed to the pipe and applied thereto in a helical wrapping as the pipe moves past the wrapping station with a combined rotary and longitudinal motion. hand wheel 82 serves to rotatel the tank about its pivotal mounting to vary the angle at which the strip is Ydirected to the pipe. Suitable heater tubes 83 are preferablyfarranged in the tank to heat the fluid.

Operation-An operator first spreadsthe supporting heads 4 and the guide rollers24rby turning the hand wheels 14 and 39 respectively.- A

pipe 23 is thenintroduced into the machine, so

that the forward end of the pipe is positioned between the belts 19 and guide rollers 24. Since the spring pressed idler pulleys 48 keep the belts taut atr all times the pipe may be inserted without trouble. The operator thenmoves the heads amount of engagement may be varied by merely 135 moving the supporting heads, depending upon thedegree yof tractional engagement desired.

' After this adjustment is made the operatorrotates the rotors 16 by turning the hand wheel 57, until the belts are set at the desired angle with the axis of theV pipe, Vdepending upon the manipulation of the hand wheel 39, until they Contact with the belt and bear against the pipe.

This action draws the belt over the pipe surshaped object comprising an endless belt adapt- ,e face, so that the. total surface karea of the belt between thel guide rollers, is incontact vrwiththe ',pipe. yThis.arrangement, together withthe tensioning-'acticnfoi the idler. 48, insures adequate jpipe Vis moved forward with a combined rotary and longitudinal motion. f Atthe wrapping station ,the pipeis stopped longenough to start y and longitudinal motion ofv the'strip supportingl means is adjusted to acvcordz'with the pipe movement impartediby the pipe moving means. started thestrip is When the belts areagain cal wrapping.` l l 'pto bewrapped are; preferably connectedtog'ethler by suitable couplings, so that the operation `of the machine is. substantially continuous. Y vAfter the wra'mied pipes leaver the machine the57 may beV separated by any suitable means, `suohas a rotary knife, adapted to move along with the c pipe andl out the wrapping.

Ielaimi': 1 l.. chine for imparting a combined ro- 1. A ma 'tary and longitudinal motion to a cylindrically.-k ,shaped object Comprising an endlessrbelt adapted to'tractienally engage the object, means for yholdingsaid beltat a selected angle to the axis ed to tractionally engage thev object, spaced guide means contacting with the belt and bearing against the object for firmly holding the portion of the belt between. the guide means in tractional engagement with ther object, and means for driving the belt.

3. A machine for imparting a combined rotary and longitudinal motion `to a Vcylindricallyed to tractionally engage the object, spaced guide rollers contactingwith the belt and bearing againstthe object for firmly holding the portion of the belt between rollers in tractional engagement with the object, and means for driving the belt. f

4. A machine for imparting a combined rotary shaped object comprising an endless belt adapted to traotionally engage the object, spaced guide rollers contacting with the belt and bearing against the object for firmly holding the portion of the belt between rollers in tractional engagement with the object, means for adjusting the distance between the rollers,` and meansfor driving the belt.

5. A machine for imparting a motion combined rotary to a cylindricallyguide rollers contacting with the belt and bearengagement with the object, mounting means wound onthe pipe in a heli-` `tractional engagement Vwith the means for driving the belt.

motion to a .cylindrically shaped object comprising an endless belt adapt.

to a cylindrioally- 6.k A machine for imparting a combined rotary and longitudinal motion to a cylindricallyshaped object comprising an endless `belt adapted to tractionally engage the `objectfmeans .for A-holding said belt at a selected angle to the axis ci", said' object,A spaced guide means contacting withthe belt and bearing against the object for firmly holding the portion ofthe belt between the guide means in tractional engagement with M the object, andmeans for driving the belt. the strip 'Z9 onthe pipe. The angular setting 7. A machine `for imparting a combined rotary and,` longitudinal motion to a cylindricallyshaped object comprising. anV endless belt adapted to tractionally engage the object', spacedguide rollersmounted` parallel with the axis of the object, said guiderollers contacting with the 4belt and bearingagainst the object for firmly holding theportion of the belt between rollers-.in object, yand `8. A machine for imparting a combined rotary and longitudinal motion .'to Va cylindrically- `shaped object comprising an endless belt Vpositioned with one of 'its reaches contacting with the object and the other or" .its reaches spaced fromthe obj ct on the same side Vof the object as thefrlrst reach, spaced guide means contacting with the -belt and bearing .against for said belt and rollersr for' allowing movement thereof to and from the object,andn1eans'.for ldriving the belt.- l.

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the object for firmly holding the portion ofthe belt between lthe guide means in tractional engagement with the object, and means fior driv-. ing the belt.

9.v Amachine for imparting a combined ro tary and longitudinal motion to a cylindricallyshaped object comprising an endless belt positioned with one oi its reaches contacting with the object and the other of its reaches spaced from the object and on the same side of the object as the *rst reach, another beltarranged similar to the first belt and positioned on the opposite side of theobject, and means for driving the belts. v l0. A pipe wrapping machine comprising ay belt adapted to tractionally engage the pipe, guide means contacting with the belt and bear--r ing against the pipe for holding the belt about a substantial portion oi the pipe surface, means for tensioning the belt, andmeans for driving the belt. e v

1l. A pipe wrapping machine comprising a 'belt adapted to `tractionally engage the pipe,

guide means contacting with the belt and bearing against the pipe for vholding the belt about a substantial portion of the pipe surface, said belt being set at a selected angle relative to the pipe axis, means for `varyingtlfie angular setting of the belt,` andA means for driving the belt.

l2. A pipe Wrapping machine comprising a belt adapted to tractionally engage the pipe, a pair oi guide rollers contacting with the belt and bearing against the pipe for holding the belt about a substantial portion of the pipe suriace, means for adjustably positioning said .rollers relative to the pipe, and means for driving the belt. l `13. A pipe wrapping machine comprising a belt adapted to tractionally engage the pipe, a pair oi guide rollers contacting with the beltv and bearing against the pipe for holding the belt about a substantial. portion of the pipe surface', means for adjustably positioning-said roll,-A

ers relative `to the pipe, means for adjustably positioning the belt relative tothe pipe, and means fordriving the belt. Y Y f 14. A pipe Wrapping machine comprisingr a belt adapted to tractionally engage the pipe, a pair of guiderrollers contacting with the belt and bearing .against the Vpipe for holding the belt about av substantial portion` 'of the; pipe surface, means for spreading said rollers, means for bodily'moving the rollersfand belt relative `to the pipe, and means for driving the belt.

15. A pipe` wrapping machine comprising a pair .of crossed beltsoppositely disposed about the pipe and adapted'to tractionally engage` the pipe, guide means for-holding the belts about a substantial portion of the pipe surface, andmeans for driving the belts.

16. A pipe Wrapping machinecomprising a pair of crossed rbelts oppositely disposed about the pipe and adapted to tractionally engage the pipe, guide means for holding the belts about a substantial portion of the vpipe surface, each of said belts beingset at the same Yangle relative to the pipe axis, means for simultaneously adjusting the belts to varysaid angle, and means for driving the belts.

17. A'pipe Wrapping machine comprising a pair of crossed belts oppositely disposed about the pipe and adapted to tractionally engage the pipe, guide means forholding the belts about a substantial portion of the pipev surface,.each of said belts being set at the `same angle rela.-

tive to the pipe axis, means for` simultaneously y A18.,A pipe Wrapping machine comprising a@ Vframe, a rotor mounted von saidrframe, an end-v less beltmounted on said rotor, means for turning said rotor, means4 for moving the rotor to andvfrom the pipe, and means for driving the belt.

endlessbelt mounted on said rotor so that one reach thereof is adapted to run on said rollers, means for turning said rotor, means for moving the rotor to rand from the pipe and means for driving the belt. ,Y y

20. A pipe Wrapping machine comprising a frame, a head slidably mounted on'said frame, a rotor journaled on the head, a pair of guide rollers slidably mounted on said head, an endless belt Vmounted on the rotor so that one reach thereof is adapted to run on said rollers, means for movingthe head, means for turning the rotor, means for moving the rollers, and means fordriving the belt. V Y

21. A machine for imparting a combined ro- 19. A pipe Wrapping machine comprising a VVframe, a rotorj mounted on said frame, a pair 'of guide rollers mounted on said frame, 'an

tary and longitudinal motion to a cylindricallyshapedobject comprising a belt adapted to tracsaid belt allowingv bodily movement thereof to and from the pipe, and means for Adriving the belt.

DOZIER FINLEY.

iis 

